Socket-wrench



IVI. HARRISON,

SOCKET WRENCH.

APPLlcATloN FILED 1AN.20, |919.

1,334, 154. Patented Mar. 16, 1920.

EEEM E 51m/vanto@ I l UNITED STATES PATENT OFFICE MARK nAnntsoN', or iomvvnn, COLORADO.

SOCKET-WRENCH.

Specification of Letters Patent.

y Patented ivrar. `1o, v1920.

Application filed January 20, 1919. Serial No. 272,042.

l such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in socket wrenches.

One object of the invention is to provide an improved means whereby sockets of dif ferent sizes may be quickly and easily attached to and removed from the handle.

Another object is to provide a universal joint connection between the sockets and handle whereby the latter may be operated at an angle to the sockets.

A further object is to provide a 'wrench of this character which will be. simple and inexpensive in construction, strongand durable in operation, and well adapted to the purpose for which it is designed.`

' Withthe foregoing and other objects in view the invention consists inthe construction, combination and arrangement of parts herein described and claimed.

In the accompanying drawings:

Figure 1 is a perspective view of my improved wrench;

Fig. 2y is a central vertical longitudinal section of the wrench; l

Fig. 3 is a cross sectional view taken on theplane indicated by the broken line 3-3 of Fig. 2;

Fig. 4 is a detail sectional view similar to Fig. 2 showing the position of the parts when the handle is operated at an angle to the socket; and

Fig. 5 is a detailside view of the cross pin by means of which the sockets are operatively and removably attached to the handle.

Referring more -particularly to the drawings, 1 denotes the handle of my improved wrench which is preferably in the form of a straight metal rod of suitable size and length. One end of the handle is enlarged and has formed therein a transverse passage 2 with which is loosely and removably engaged a cross bar or hand grip 3. OnV the opposite end of the handle is also formed a substantially spherical enlargement or head al having a transverse passage 5. This enlarged end of the handle has also formed therein a longitudinalV cavity 6 which extends inwardly a suitable distancefrom the 'transverse passage 5 and has seated in its inner end a coil spring 7 between which and the transverse passage 5 is a spherical detent orball 8 a 'lportionof which ,projects into the transverse passage 5 as shown. The detent 8 is held in operative position against the pressure of the spring V by upsetting or crimping the outer edges of the longitudinal cavity 6 where the. same opens into or intersects the transverse passage-J 5. This upsetting of the ,edges ofthe passage -5 at the place indicated is effected by a suitable, in-

strument inserted through the4 outer portion v of the cavity 6 in the end of the handle.

Adapted to be inserted through the transverse passage 5 and to be removably held in position therein by the detent 8 is a cross kpin 9 having therein midway betweenfits ends` cross pin 9`is of suiiicient 'length to permit the v opposite end thereof to project fa suitable distance beyond the sidesof the head or enlargement 4- and the outer ends of the pin are rounded so that when thelatter is pushed throughthe passage 5 theengagement of one of the rounded ends will 'force the detent 8 inwardly against'the pressure of its `spring until the groove l0 is opposite to the detent at which time lthe springwill forcethe detcnt outwardly and into .yieldingenf gagement with the' groove l0 in the pin, The walls of the groove 10 are beveled so that the detent does not positively lock the pin and when sufficient pressure is applied to either end of the pin to overcome the pressure ofthe spring 7 the detent will be forced inwardly thus permitting the cross pin to be readily removed while at the same time the pin will be held against accidental removal in the use of the tool.

Any number of nut engaging or socket members of various sizes may be provided for use with the .handle herein described, all of which are of substantially the same construction,r therefore only one socket is shown. in the drawing. The sockets consist of a tubular member 11, the outer portion of which kis preferably of hexagonal shape for engagement to a similar shape nut, while the inner portion thereof is preferably cy1indrical. At diametrically opposite positions in the sides of the inner cylindrical portion of the sockets are formed alined longitudinally disposed slots l2 which when the socket is in place on the handle receive the projecting ends of the cross pin 9 which thus loosely attach the socket to the handle. The Wall of the passage at the inner end of the cylindrical portion of the socket is beveled as at 13. This construction and the slots l2 in the walls of the socket with which the proj ecting ends of the pin 9 are loosely engaged provide for a rocking movement of the handle in all directions or a universal joint connection between the handle and the socket so that when necessary the handle may be operated at an angle to the socket.

By providing the detachable connection between the cross pin 9 and the end ot the handle as herein shown and described the pin may be readily disengaged from the handle to permit quick and easy removal and replacing or' the interchangeable socket members of the Wrench. At the same time a strong, durable and reliable connection between these parts is provided for eiiecting the turning' or' the socket by the handle When the latter is in line with the s ocket or at an angle thereto.

' yI claim: j j

l. A Wrench comprising a handle member having on one end an enlarged substantially cylindrical head provided with a transverse passage and having a longitudinal cavity reduced in size at its point or intersection with the inner side of the transverse passage, a spring projected spherical detent arranged in the inner end ot said cavity and held in operative p osition therein by the reduced portion of the cavity, a socket member having therein slot-s, a cross pin detachably engaged with the transverse passage in said handle member and having its projecting end loosely engaged with the slots in saidsocket member, said cross p-in having therein a beveled Vcircumierential groove to receive said spring projected detent whereby said pin is operatively held in place.

2. A Wrench comprising a handle having on one end an enlarged substantially cylindrical head provided with a transverse passage and having a longitudinal cavity, 'a spring projected detent arranged in the inner end of said cavity, means for operatively holding said detent in said cavity, a socket member having a. central passage extending entirely therethrough and shaped at one end to engage a nut and having the inner Walls of its inner end beveled or flared outwardly, said socket member also having therein oppositely disposed slots, a cross pin detachabl engaged With the transverse passage in said7 handle member and having its projecting end loosely engaged with the slots in said socket member, said cross pin having therein a circumferential V shaped groove adapted to receive the spring projected det-ent in the cavity of the handle member whereby said pin is operatively held in 'place but may be readily removed to permit the disengagement from the socket member from the handle member. l l

3. A Wrench comprising a handle member having in one end atransverse passage and a longitudinal cavity, a spring projected detent held in operative position in the inner endjoi' said cavity, a socket member having therein oppositely disposed longitudinal slots, a cross pin having beveled or rounded ends and a. centrally disposed circumferential V shaped groove, said pin being adapted to be removably engaged With the transverse passage in said member and to be operatively held in position by said spring projected detent, the ends of said pin engaging the slots in said socket member whereby a universal connection is formed between said socket member and handle.

In testimony whereof I have hereunto set my hand. 

